耳管通気法により発生した気頭症の1例

A Case of Pneumocephalus due to Eustachian Tube Inflation

I．はじめに

　頭蓋内に空気が進入する気頭症pneumocephalusは頭部外傷にさいし稀ならずみられ，また耳性髄膜炎でも認められることがある。最近われわれは開頭術後併発した滲出性中耳炎に対して行われた耳管通気法によって，皮下および頭蓋内に空気貯留を認めた1例を経験したので報告する。

　A 51-year-old female was operated on for meningioma in the left middle fossa. At that time, the pneumatic cells of the temporal bone were opened. They were closed completely during the procedure, and there was no liquorrhea clinically. Pneumocephalus was caused by Eustachian tube catheterization for secretory otitis media in the left ear. Massive air in the subcutaneous, subdural and dead space were observed on CT scan 19 days after craniotomy.